cisco 4928 User Manual
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Data Sheet
Cisco Catalyst 4928 10 Gigabit Ethernet Switch
High-Performance Space-Constrained Branch-Office Switching with Enterprise-Grade Features
Product Overview
The Cisco® Catalyst® 4928 10 Gigabit Ethernet Switch (4928-10GE) is a wire-speed, Layer 2 to 4, 1-rack-unit (1RU) switch designed for space-constrained LAN distribution and core applications. Based on the proven Cisco Catalyst 4500 Series hardware and software architecture, this switch offers exceptional performance, bandwidth, and reliability for medium-density, multilayer aggregation of high-performance LAN access switches. High performance and scalability of intelligent network services are made possible with dedicated specialized resources known as ternary content addressable memory (TCAM). Ample TCAM resources (64,000 entries) enable high feature capacity, providing wire-speed routing and switching performance with concurrent provisioning of services such as quality of service (QoS) and security, helping ensure scalability for today’s network requirements with ample room for future growth.
The Cisco Catalyst 4928 10 Gigabit Ethernet Switch offers 28 wire-speed 1000BASE-X Small Form-Factor pluggable (SFP) ports and 2 wire-speed 10 Gigabit Ethernet (X2 optics) ports. Exceptional reliability and serviceability are delivered with optional internal AC or DC 1 + 1 hot-swappable power supplies and a hot-swappable fan tray with redundant fans (Figure 1).
Figure 1. Cisco Catalyst 4928 10 Gigabit Ethernet Switch with Hot-Swappable Fan Tray and Power Supplies
Applications
The Cisco Catalyst 4928 10 Gigabit Ethernet Switch offers flexible and highly available aggregation solutions for nonstop unified network services. Enterprise-grade features such as dynamic routing, dual hot-swappable power supplies, and redundant field-replaceable fans enhance switch availability.
The switch is well-suited for spaceand power-constrained deployments because of its compact 1RU form factor, economical power needs, and efficient cooling. Ideally suited to support secure converged applications such as Cisco TelePresence and Cisco Unified Communications, the switch delivers high-performance intelligent switching with its robust feature set.
© 2009 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. |
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Data Sheet
Figure 2. Branch Office Network Design
The 28-port downlink density is ideally suited for branch-office locations where a collapsed distribution core is the most common network architecture (Figure 2). The downlink ports provide both an aggregation point for all access switches and connectivity and policy services for traffic flows. The uplink ports connect the LAN to the external networks, including remote data centers and branch offices. The SFP downlink ports are compatible with many different optics types, allowing network architects to mix and match to meet specific network requirements.
Key Features and Benefits
Wire-Speed Performance in All Directions
The Cisco Catalyst 4928 10 Gigabit Ethernet Switch delivers wire-speed throughput with low latency for dataintensive applications using a 96-Gbps switching fabric with a forwarding rate of 72 million packets per second (mpps) in hardware for Layer 2 to 4 traffic. High-performance switching is maintained regardless of the number of route entries or Layer 3 and 4 services enabled. Hardware-based Cisco Express Forwarding routing architecture enables increased scalability and performance. X2 10 Gigabit Ethernet optics provide 20 Gigabit Ethernet wirespeed uplinks for maximum traffic throughput.
Power-Supply Redundancy for Nonstop Operations
The Cisco Catalyst 4928 10 Gigabit Ethernet Switch provides reliability for critical applications with 1 + 1 redundant, hot-swappable internal AC or DC power supplies. The 1 + 1 power supply design provides A-to-B failover when power supplies are connected to different circuits. You can mix AC and DC power supplies in the same unit for maximum deployment flexibility. The switch also has a hot-swappable fan tray with four redundant fans for additional serviceability and availability.
Comprehensive Management
The Cisco Catalyst 4928 10 Gigabit Ethernet Switch includes a single, dedicated 10/100 console port and a single, dedicated 10/100 management port for offline disaster recovery and remote out-of-band management. Remote inband management is available with the Simple Network Management Protocol (SNMP), Telnet Client, Bootstrap Protocol (BOOTP), and Trivial File Transfer Protocol (TFTP).
The management port has two operating modes designed to increase operational efficiency and availability. When the system is in Remote Monitoring (RMON) mode, the management port operates in a disaster-recovery mode. In this state the operator can reload new Cisco IOS® Software images from a TFTP server. During normal system
© 2009 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. |
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Data Sheet
operation the management port operates as a standard out-of-band management port. Network administrators can use standard command-line interface (CLI) commands to monitor and configure the switch without interrupting the data flow.
The Cisco Catalyst 4928 10 Gigabit Ethernet Switch delivers a comprehensive set of management tools to provide the visibility and control required for LAN switching. With CiscoWorks solutions and embedded CiscoWorks CiscoView, you can configure the switch to manage devices, VLANs, traffic, and policies. These web-based management tools offer numerous services, including software deployment and quick isolation of error conditions.
Feature Availability
Table 1 lists software configuration options, Table 2 compares models for fiber aggregation, and Table 3 lists the features and benefits of the Cisco Catalyst 4929 10 Gigabit Ethernet Switch.
Table 1. |
Software Configuration Options for the Cisco Catalyst 4928 10 Gigabit Ethernet Switch |
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Software Image |
Description |
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IP Base Image |
Standard Layer 3 image, including Routing Information Protocol Version 1 (RIPv1), RIPv2, static routes, and Enhanced IGRP |
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(EIGRP) stub |
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Enterprise Services |
Enhanced Layer 3 image, including Open Shortest Path First (OSPF), Intermediate System-to-Intermediate System (IS-IS), |
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Image |
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EIGRP, Border Gateway Protocol (BGP), and all IP Base image features |
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Table 2. |
Cisco Catalyst 4900 Series Switch Model Comparison for Fiber Aggregation |
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Feature and Description |
Cisco Catalyst 4928 10 Gigabit Ethernet |
Cisco Catalyst 4900M Switch |
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Switch |
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Switch Capacity |
96 Gbps |
320 Gbps |
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Throughput |
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71 mpps |
250 mpps for IPv4 |
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125 mpps for IPv6 |
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IPv6 Support |
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In software |
In hardware |
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Height |
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1RU |
2RU |
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Modular Half-Card Slots |
0 |
2 |
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Maximum Number of 10 Gigabit Ethernet |
2 |
24 |
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Ports |
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Maximum Number of Gigabit Ethernet |
28 |
32 (Cisco TwinGig Converter Module) |
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(Fiber) Ports |
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Uplink Optics Type |
4 SFP |
8 X2 (10 Gigabit Ethernet) optics |
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2 X2 (10 Gigabit Ethernet) optics |
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Multilayer switching |
IP Base and Enterprise Service options |
IP Base and Enterprise Service options |
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Shared Buffer |
16 MB |
16 MB |
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CPU |
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666 MHz |
1.3 GHz |
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Synchronous Dynamic RAM (SDRAM) |
256 MB |
512 MB |
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Active VLANs |
2,048 |
4,096 |
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Multicast Entries |
28,000 (Layer 3) |
56,000 for IPv4 |
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16,000 (Layer 2) |
28,000 for IPv6 |
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Per-VLAN Spanning Tree (PVST) and VLAN |
4,096 |
4,096 |
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IDs |
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Spanning Tree Protocol |
10000 |
10000 |
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Switched Virtual Interfaces (SVIs) |
2,000 |
4,000 |
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Security and QoS Hardware Entries |
32,000 |
128,000 |
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MAC Addresses |
55,000 |
55,000 |
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Switched Port Analyzer (SPAN) |
2 ingress and 4 egress |
8 ingress and 8 egress |
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USB Port |
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No |
Yes |
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Compact Flash Memory Support |
No |
Yes |
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© 2009 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. |
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Data Sheet
Feature and Description |
Cisco Catalyst 4928 10 Gigabit Ethernet |
Cisco Catalyst 4900M Switch |
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Switch |
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System Reset Button |
No |
Yes |
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Minimum Software Requirement |
Cisco IOS Software Release 12.2(46)SG or |
Cisco IOS Software Release 12.2(40)XO or later |
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later |
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Table 3. |
Features and Benefits |
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Feature |
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Benefit |
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Outstanding Scalability |
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16-MB shared buffer |
Large buffers for high-bandwidth video distribution and large file transfers |
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96-Gbps and 71-mpps wire-speed |
Delay-sensitive traffic forwarding without interruption |
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performance with low latency |
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Wire-speed uplinks |
Elimination of oversubscription bottlenecks between downlinks and uplinks across the switch |
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Configuration Flexibility |
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SFP optics support |
Wide range of cost-effective optics types for diverse deployment options |
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Dual AC or DC power |
High availability for nonstop operation |
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Supported X2 Optics
Table 4 lists the Cisco Catalyst 4928 10 Gigabit Ethernet Switch X2 optics support.
Table 4. X2 Optics Support of Cisco Catalyst 4928 10 Gigabit Ethernet Switch
Type |
Maximum Distance over Specified Medium |
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Long reach (LR) |
10 km on sigle-mode fiber (SMF) (G.652) |
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CX4 |
Up to 15m on IBX4 cable |
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LX4 |
300m on multimode fiber (MMF) |
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Short reach (SR) |
26 to 300m on MMF (depends on MMF type) |
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Extended reach (ER) |
40 km on SMF |
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Long reach LRM |
220m on MMF |
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Power Supply
The Cisco Catalyst 4928 10 Gigabit Ethernet Switch offers a choice of 300-watt (W) AC or DC power supplies. The switch can operate with one power supply present. When two power supplies are installed, the switch shares the power load between the two supplies. Table 5 lists the specifications of the power supplies.
Table 5. |
AC and DC Power Supply Specifications |
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Specification |
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300 WAC |
300 WDC |
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Input Current |
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4A at 100V or 2A at 240V |
8A at -40 to -72 VDC |
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Output Current |
8A at –40 to –60 VDC |
8A at -40 to -72 VDC |
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Output Current |
25A at 12 VDC |
25A at 12 VDC |
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Weight |
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2.0 kg |
2.0 kg |
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Heat Dissipation |
1023 BTU/hr |
1023 BTU/hr |
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Switch Dimensions
●Width: 17.290 in. (43.9166 cm)
●Depth: 16.14 in. (40.9956 cm)
●Height: 1.712 in. (4.445 cm)
●Weight: 16.5 lb (7.48 kg) with one power supply
© 2009 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. |
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